Packing.



No. 645,868. Patented Mar. 20, I900. J. J. MOSS.

PACKING.

(Application filed. May 26, 1899.)

(No Model.)

W/TNESSES I INV TO/? A TTORNE rs NITED STATES PATENT Fries.

JOHN J. MOSS, OF CHICAGO, ILLINOIS.

PACKING.

SPECIFICATION forming part of Letters Batent No. 645,868, dated March20, 1900.

Application filed May 26, 1899.

To all whom it may concern.-

Be it known that I, JOHN J. Moss, of Ohicago, in the county of Cook andState of Illinois, have invented a new and Improved Packing, ofwhich'thefollowing is a full, clear, and exact description.

The purpose of this invention is toprovide a packing which will beuseful both for packing rods and joints or for use in connection withvarious forms of machinery, the invention relating to the same generalclass as that of my former patent, No. 258,794, dated May 30, 1882.

This specification is the disclosure of one form of my invention, whilethe claims define the actual scope thereof.

Reference is to be had to the accompanying drawings, forming a part ofthis specification, in which similar characters of reference indicatecorresponding parts in all the views.

Figure 1 is a sectional View of the invention, showing it applied on arod-packing, the section being taken on the line 1 1 of Fig. 2. Fig. 2isan end elevation thereof with parts broken away and with the rod shownin section, and Fig. 3 is a fragmentary sectional View illustrating theinvention applied on a packing for coupled pipes.

Referring to Figs. 1 and 2, the stuffing-box' 4, to which my inventionis applied, is formed with four longitudinally-extending grooves 5 inthe bore thereof, three of such grooves being shown by full anddottedlines in Fig. 1, and through said bore is passed the rod 6. The bore ofthe stuffing-box 4 is enlarged to receive the packing-sleeve, whichcomprises three principal parts-namely, the circular packing-collar 7,the spiral 8, and the head 9. The spiral 8 may, if desired, be providedwith an interior packing of Babbitt or other analogous metal. Theseparts are formed integral, the packing-collar 7 having a beveled innerend 10 lying against the corresponding beveled portion 11 formed in thebore of the stuffing-box. The interior of the collar 7 is formed with acounterbore 12, in which Babbitt metal or other packing composition maybe laid. The collar 7 is also provided with four studs 14, respectivelysliding in the grooves 5 of the stuffing-box, so as to prevent thecollar from turning and at the same time permit the collar to slide onthe shaft. The

the adjacent end of the spiral 8.

saw 110,718,884. (No model.)

spiral 8 is either formed integral with the col- -lar 7 or has its innerend fastened securely thereto, the coils of the spiral being closelylaid, so as to form practically a sleeve encircling the rod 6 within thestuffing-box. The head 9 is circular inform and, like the collar 7, iseither integral with or rigidly secured to The head 9 has a counterbore15, which, like the counterbore- 12, should be filled with Babbitt metalor other packing composition. The head 9 is carried in a bearing 16, sothat the head may turn freely in the bearing, and the bearing is held inplace by means of bolts 17 passing through the bearing and into thegland, the bolts 17 also holding a cross-head 18, which has an openingreceiving the rod and which bears against the head 9, pressing the head,with the other parts connected therewith, inward, and consequentlyassisting the bearing-16 in preventing the outward movement of the head9 and the connected parts. The head 9 is formed with a semi-annularperipheral groove 19, in whichis fitted a spanner 20, pivoted to thehead at the point 21 and having a shank '22, pivotally connected with arod 23, which extends tangentially through the head and slides throughan extension 2 1 of the bearing 16. An adj usting-nut 25 is mounted onthe end of the rod 23, and an ex pansive spring 26 encircles a part ofthe rod 23 and presses against the bearing 16 and against the nut 25, soas to throw the rod 23 rightward, (see Fig. 2,) and thus keeps thespanner 22 continually under pressure. The spanner tends to move thehead 9, and this turning movement of the head 9 is transmitted tothespiral 8, serving to tighten the same around the shaft and effectivelypack the same and also to push the collar 7 inward to further tightenthe packing. It should be understood that the spiral 8 is yielding andthat its ends are respectively in fast connection with the collar 7 andhead 9, so that upon the turning of the head the spiral may be eithercontracted or expanded and the collar 7 pushed into active position orwithdrawn therefrom.

Should the spiral 8 be disposed oppositely to the arrangement shown inthe drawings, the arm 22 of the spanner may be provided with a rod X,threaded oppositely to the rod 23 and engaged in a nut X, fast on thehearing 16 opposite the extension 24, by which arrangement the spanneris drawn to the left. (See Fig. 2.) In this case the spanner also shouldbe reversed.

The form of the invention shown in Fig. 3, such being the form adaptedto packing coupled pipes, difiers from the form shown in Figs. 1 and 2only in the manner in which the pipe is fitted thereto. When theinvention is used in this manner, the stuffing-box 4 is provided with aninternal flange 28. The pipe 27 is passed through the packing in thesame manner that the rod is arranged, as previously described, and thepipe is provided with a collar 27, screwed or otherwise fastenedthereon, the collar fitting movably in a cavity 4 in the stuffing-box.This allows the pipe 27 and collar 27 a movement in the stuffing box,but at the same time effectively packs the pipe to prevent leakage. Theother section of the pipe is adapted to be flanged and boltedhermetically to the stufling-box 4:, so as to communicate with thecavity 4" therein.

Other means may be provided for moving the spanner, if desired. I do notlimit myself to the arrangement shown.

Having thus described my invention, I claim as new and desire to secureby Letters Patent-- 1. In apacking, the combination with a stufiing-boxhaving a groove formed longitudinally in the bore thereof, of apacking-sleeve comprising a collar with a stud sliding in the groove, aspiral, one end of which is attached to the collar, and a head attachedto the other end of the spiral, a bearing attached to the stufling-boxand carrying the head, and a spanner connected with the head and withthe bearing,whereby to turn the head for contracting and expanding thepacking-sleeve.

2. In a packing, the combination of a packing-sleeve, a bearing, aspanner connected with the sleeve, a rod connection with the spanner,and a spring-packing between the bearing and the rod and serving to keepthe spanner under pressure.

3. In a packing, the combination with a stuffing-box having alongitudinally-extending groove in the bore thereof, of a packingsleevecomprising three parts, namely, a collar with a stud sliding in thegroove of the stufiing-box, a spiral, one end of which is fastened tothe collar, and a head to which the other end of the spiral is fastened,a spanner connected with the head, a rod attached to the spanner, abearing carried on the stufling box and serving to hold the head, and aspring connection between the rod and the bearing, to maintain the rodunder pressure.

4. In a packing, the combination with a stuifing-box, of apacking-sleeve, comprising a spiral, the sleeve having connection at oneend with the stufling-box, a spanner connected with the other end of thesleeve, and means bearing between the spanner and stufling-box andserving continually to maintain the spiral under pressure.

JOHN J. MOSS.

Witnesses:

WILLIAM BLIss, A. BUTTS.

